Reboot does not work on Tanix TX6

[j-a-sunny]

I'm on Tanix TX6 running miniarch Endeavor OS minimal from an SD CARD. when i run reboot the device hangs and does not complete reboot. so i have to manually unplug the power to reboot.

jasper@tx6 ~> fastfetch
./o. jasper@tx6
./sssso- ----------
:osssssss+- OS: EndeavourOS aarch64 :+sssssssssso/. Host: Tanix TX6
-/ossssssssssssso/. Kernel: Linux 6.19.5 -/+sssssssssssssssso+: Uptime: 3 mins-:/+sssssssssssssssssso+/. Packages: 755 (pacman)
.://osssssssssssssssssssso++- Shell: fish 4.5.0 .://+ssssssssssssssssssssssso++: Display (default): 1920x1080 in 23" .:///ossssssssssssssssssssssssso++: Cursor: Adwaita :////ssssssssssssssssssssssssssso+++. Terminal: /dev/pts/0
-////+ssssssssssssssssssssssssssso++++- CPU: sun50i-h6 (4) @ 1.70 GHz ..-+oosssssssssssssssssssssssso+++++/ GPU: Allwinner sun50i-h6-mali [Integrated] ./++++++++++++++++++++++++++++++/:. Memory: 1.41 GiB / 2.91 GiB (48%):::::::::::::::::::::::::------`` Swap: Disabled
Disk (/): 14.16 GiB / 57.05 GiB (25%) - ext4
Local IP (end0): 192.168.1.2/24
Locale: en_US.UTF-8

[dchauran]

I've spent a significant amount of time chasing this down on my own board, and it has to do with the handoff between the kernel and firmware in the default PSCI reboot path. The kernel hands off the reboot to firmware but that call never returns and does not reset the machine. I made a custom kernel to bypass that, which falls back to using sunxi_wdt to reboot and that works. I haven't had more time to figure out if there is a viable patch that could be incorporated here thouse. @warpme does any of that make sense to you? I am way out of my depth here.